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Variation for nine virulence and four electrophoretic characters was determined for 69 samples of Colletotrichum gloeosporioides collected in five natural stands of its host, Stylosanthes guianensis, in South America. Virulence phenotypes varied from four in the Quilichao population to 22 in the ...


Lenne, J.M.Burdon, J.J.[Preliminary study of virulence and isozymic variation in natural populations of Colletotrichum gloeosporioides from Stylosanthes guianensis]Preliminary study of virulence and isozymic variation in natural populations of Colletotrichum gloeosporioides from Stylosanthes guianensis
Autor: Grof, B

Agronomic assessment of 76 accessions of tropical fine stem stylo or "tardio" (Stylosanthes guianensis Sw. var. guianensis) was carried out at the Carimagua Research Station in the eastern plains region of Colombia. Of 27 accessions tested for dry matter yield, CIAT 10136 was the highest yielder ...


Grof, B[Preliminary studies on the performance of accessions of tropical fine stem stylo (Stylosanthes guianensis sw. var. guianensis) in the eastern plains of Colombia]Preliminary studies on the performance of accessions of tropical fine stem stylo (Stylosanthes guianensis sw. var. guianensis) in the eastern plains of Colombia

Rust caused by Puccinia stylosanthis is reported for the first time on native populations of Stylosanthes aurea and S. guianensis var. pauciflora in the vicinity of Diamantina, Minas Gerais, Brazil. Although not common in May 1983, rust severely affected 50% of S. aurea and moderately affected mo...


Lenne, J.M.Sousa Costa, N.M. de[Puccinia stylosanthis on Stylosanthes spp. in Brazil]Puccinia stylosanthis on Stylosanthes spp. in Brazil

The effects of size of terminal stem cuttings (2-, 3-, or 4-leaf) and of auxin treatment on percent rooting, root number and root length of six Stylosanthes guianensis accessions were evaluated in a single, factorial experiment. Overall, 66% of cuttings rooted within ten days. Accessions differ...


Miles, John W.[Rapid vegetative propagation of Stylosanthes guianensis]Rapid vegetative propagation of Stylosanthes guianensis

Phosphorus (P) deficiency increased the secretion of phytases from roots of various plant species. The secretory phytases were collected with a dialysis membrane tube for 24 hours from roots of sixteen plant species grown with low or adequate supply of P in nutrient solutions. The activity of not...


Li, MOsaki, MRao, Idupulapati M.Tadano, T[Secretion of phytase from the roots of several plant species under phosphorus-deficient conditions]Secretion of phytase from the roots of several plant species under phosphorus-deficient conditions

Relative palatability and some agronomic traits were studied for nine legumes including Aeschynomene histrix, Centrosema brasilianum (two accessions), Centrosema pascuorum, Chamaecrista rotundifolia, Stylosanthes guianensis (two accessions) and Stylosanthes hamata (two accessions). All species we...


Peters, MichaelTarawali, Shirley A.Schultze-Kraft, Rainer[Relative palatability and seasonal agronomic performance of selected pasture legumes for species mixtures in dry-subhumid West Africa]Relative palatability and seasonal agronomic performance of selected pasture legumes for species mixtures in dry-subhumid West Africa

Three phases of Rhizobium inoculation trials were carried out as part of a programme to select forage legume germplasm adapted to acid, infertile Oxisols of tropical America. Firstly, a range of tropical forage legumes were evaluated for their response to N fertilization or inoculation with strai...


Sylvester-Bradley, Rosemary[Rhizobium inoculation trials designed to support a tropical forage legume selection programme]Rhizobium inoculation trials designed to support a tropical forage legume selection programme

The seed yields and limitations to yield for nine pasture legumes in a tropical savanna region were defined in a 3-year field experiment at the Cerrodos Agricultural Research Centre near Brasilia (15°36' S, 47° 42' W). Assessment was based on flowering times, incidence of diseases and pests, yiel...


Andrade, Ronaldo P. deThomas, D.Ferguson, John E.[Seed production of pasture species in a tropical savanna region of Brazil. 1. Legumes]Seed production of pasture species in a tropical savanna region of Brazil. 1. Legumes

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